# DNS upstream pool
upstream dns {
        zone dns 64k;
        server 127.0.0.1:5353;
    }

    # DoT server for decryption
server {
        listen 853 ssl;
	listen [::]:853 ssl;
	ssl_protocols TLSv1.2 TLSv1.3;
        ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
        ssl_prefer_server_ciphers off;
        ssl_certificate /go/to/ket/;
        ssl_certificate_key /go/to/ket/;
        proxy_pass dns;
    }